2 Types of Black Widows in Arizona
2 types of black widows have a verified observation record in Arizona. The most frequently recorded are Western Black Widow and Brown Widow. Here is the full list, ranked by how often each is reported on iNaturalist.
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2 types of black widows have a verified observation record in Arizona. The most frequently recorded are Western Black Widow and Brown Widow. Here is the full list, ranked by how often each is reported on iNaturalist.
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Real sighting data, source iNaturalist
2,733 verified observations on iNaturalist of black widow have been recorded in Arizona, most often in September, August, July.
When black widow are recorded in Arizona
Verified species, source iNaturalist
2 types of black widows recorded in Arizona
2 black widow species have a verified observation record in Arizona, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
1 of the 2 shown is recorded as introduced to Arizona rather than native.
- No openly licensed photo yet1
- No openly licensed photo yet2
Counts from verified iNaturalist observations.
The Western Black Widow (Latrodectus hesperus) is the most commonly recorded, with 2,476 verified observations, about 98% of all black widows reported in Arizona. If you spot a black widow here, it is statistically most likely to be this one.
Not every one of these is originally from here. Brown Widow is recorded by iNaturalist as introduced in Arizona rather than native, so it arrived with human help rather than on its own.